I have to apologize, I'm confusing two different problems I've been worki ng on. The hang condition that Martha reported is not the one related to HPMA enabled hardware or "logically zero" page states. Rather, it has to do with some unusual behavior by DB2 for VM (with dataspaces) in its usage o f Diagnose x'10' to release page ranges which include pages that are still being actively referenced by other threads. I still would not expect any other products or applications to expose that problem, though I can't guarantee that such cases do not exist. We've never seen or heard of the problem occurring for SFS with dataspaces (and the exposure isn't dataspa ce specific), or anything other than DB2, so I'm fairly confident your syste m will not experience it.
- Bill Holder, IBM z/VM CP Development, Storage Management On Mon, 27 Mar 2006 14:50:50 -0800, Schuh, Richard <[EMAIL PROTECTED]> wrot e: >Not even SFS with dataspace enabled directories? > >Regards, >Richard Schuh > > -----Original Message----- >From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Bill Holder >Sent: Monday, March 27, 2006 2:11 PM >To: IBMVM@LISTSERV.UARK.EDU >Subject: Re: Update on z/VM 5.2.0 problem > >There are two aspects of the problem, only one of which is directly Diag n= >ose >x'10' / release processing related. The other aspect has to do with >handling of the "logically 0" page state created by Diagnose x'10', when = >the >HPMA function is enabled and substantial paging load is present. I real l= >y >doubt anyone not running DB2 for VM with dataspaces enabled on HPMA capa b= >le >hardware with will experience the problem. > >- Bill Holder, IBM z/VM CP Development, Storage Management
